There is an issue that may be meant or not, but in my case is annoying. If you have have a schema like the following:
[code]
pragma foreign_key = on;
create table parent (
id integer,
a varchar,
primary key (id asc)
);
create table child (
id integer,
b varchar,
a integer,
primary key (id asc),
foreign key (a) references a (id) on delete cascade on update cascade
);
[/code]
When you try to delete a parent row (delete from parent where parent.id=?) it deletes all the childs referenced to this parent, but the method SQLite3::changes() is still returning 1, as if it only have deleted the parent.
SQLite3::changes
(PHP 5 >= 5.3.0, PHP 7)
SQLite3::changes — Returns the number of database rows that were changed (or inserted or deleted) by the most recent SQL statement
Descrierea
public SQLite3::changes
(
) : int
Returns the number of database rows that were changed (or inserted or deleted) by the most recent SQL statement.
Parametri
Această funcție nu are parametri.
Valorile întoarse
Returns an int value corresponding to the number of database rows changed (or inserted or deleted) by the most recent SQL statement.
Exemple
Example #1 SQLite3::changes() example
<?php
$db = new SQLite3('mysqlitedb.db');
$query = $db->exec('UPDATE counter SET views=0 WHERE page="test"');
if ($query) {
echo 'Number of rows modified: ', $db->changes();
}
?>
add a note
User Contributed Notes 2 notes
teclado at tandex dot com ¶
9 years ago
krebs dot seb at googlemail dot com ¶
13 years ago
It seems, that this method doesn't report the affected rows properly, when using with savepoints or a transaction.
